fusion3: 4.2.2 kernel bring up

Change-Id: If93b04366104e64635ce4c99e4abf0d1b906dcaf
fusion3: Enable tunnel audio

 * Out with LPA, tunnel mode is the new hotness.
 * Tunnel mode sends compressed audio streams directly to the Hexagon
   where it's decoded and processed, rather than decoding in userspace
   and sending huge buffers of PCM data.

Change-Id: Ib13e47ac3658a1e19e520bbb456dcd6c279f49b4